Hi, a newbie here.
I plan to create an scp with a group of people who can act normally only if they are exposed to a certain "melody".While they don't listen to it, their time is stopped(not only unable to feel the time, but any physics involves time don't work on them.
Others can see them freezing there, and may find that their bloodstream, chemical reaction,etc are totally stopped, but when the music's back, they also back to normal as if the time has never stopped.

1. The people being "trapped" in a constantly changing world. Time doesn't pass for them. They jump from place to place as if they're being teleported or abducted.

Imagine being at a dinner party in 1975 when suddenly, everything ages and changes and gets dusty the moment you blink. There are some startled people in dark suits in the room - aliens? Burglars? - and they ask you a lot of very unusual questions. It's 1981.

Then you teleport again to prison cell of some sort. That music is playing again. People ask you more questions. You find out it's 1983. They won't let you leave.

You teleport again, this time, just across the room to your bed. More questions. The doctor who talked to you a few minutes ago looks older. Maybe this is his father?

2. The very subtle hints at the horrific tests results of playing the music faster or slower or backwards.

yeah, I was thinking almost same thing.
Besides, I plan to make it infective somehow, maybe adding a parasite feeding on time flow, but I would need to come up with more details before writing a draft.

That would be helpful, besides, I just found that there's translated version in library. I would need some time to digest the book and the movie. These material will surely help me improve the skip.
thanks a lot.

If something is frozen in time, and any of its movements are stopped, it could pose a catastrophic effect as earth is constantly moving, along with its body, thus if it stopped then it'l tear through its surrounding as earth rotates past it. There's a contradiction that you would have to address.

well, I thought no one would figure out that. Apparently, I am too young too simple
just kidding.

I actually thought that few days ago, and my resolution is to assume that the effect doesn't interupt gravity, so the scp would orbit the earth as a satellite when friction, as the time stopped, doesn't work.

Furthermore, though I am still not that sure, I guess when the scp's time stopped, it would become totally invisible in terms of EMR or light, but through Cavendish experiment we can know where it is, and the fact that the mass doesn't disappear.

However, since the electromagenic force disappeared, it would be impossible to block gas or anything else get into its body as usual, and would cause fatal problems. For that, I wanted to make it collapse to a membrane while time stopped, and it would unfold and clean up a space for the scp itself if it is placed in the right medium vibrating in the right mode.

I tried to ignore the point because I doubt that such settings would be interesting enough, at least while written by me.Besides, this may somehow violate the origin image. But as you question this, I think I'd better think it more times thoroughly.

And I just found another problem: how to keepit stay on the ground……Oh, my physic head

it would spiral down and dig deeper into the ground as its orbit, already touching ground, decayed due to gravity, furthermore as frictions are nonexistent it won't slow down when hitting walls and bedrock….

a lot of the site veterans and regulars are well versed in science and science fictions, as well as fictional science, so if you ignore a glaring problem like that it would be shot down real fast.

But if you're going the horror route like Skerples explained, you could just stop the biological clock, stopping any and all biological process in the object including consciousness and death. It would effectively be a being that live only in the duration of the music without messing with the entire world.

Yeah, you are right.
Actually the idea comes from a physic lesson talking about time. In the discussion was an idea that we human beings irrationally believe that something regularly happens in a fixed frequency, and measure "time" with it, such as atomic clock, regardless of the fact that actually we don't have any method to make sure if the clock works according to "the real time" exactly as we expect it does.

I thought if our time ,just like the scp's, could be maniputed by others (aliens,for instance), we would never see the difference, unless we find ourself beat by them(or something like that ) ,but we still have no idea how they did it, it seems like in just a moment. I want to give off some sense of terror like that, but physics is still a tough wall…

Anyway, thanks for comment, I appreciate it and would study that harder to make a decision.

I thought if our time ,just like the scp's, could be maniputed by others (aliens,for instance), we would never see the difference,

It would have to stop over a very large area (light years such that new information about position doesn't reach the Earth before the extinction of all sapient observers) and objects couldn't continue to move in their orbits relative to other bodies to not be noticeable through astronomical observations.

If you froze the Earth, but allowed it to continue to move in its orbit, then light from the moon would arrive minutes later and show that there was a discontinuity. If you froze the entire solar system in such a way that orbits were frozen we would know in about four years that Alpha Centari isn't where it is supposed to be.

If you stopped the entire universe, that is equivalent to time passing normally from the reference frame of an observer within our universe.

Looking at what the author seems to want to do with it (one of those "physics problems come to life" scips), I'd suggest a trick that's commonly used in both video games and 3D animation programs:

Say I'm doing a scene with simulated physics where I have a moving thing attached to a moving thing- a classic example is a hula girl glued on a car's dashboard. The car uses the main frame of reference, because it needs to interact with the ground. But with the hula girl, we lock its coordinates and rotation relative to those of the car (called "parenting"). That way the hula girl can move freely in response to physics, but wherever the car goes so will the hula girl, even if you pause the hula girl's physics simulation.

So say the anomaly does something similar: If we're still going for the record idea, the people could be fixed relative to the record- moving the record would move the people around it. The people could also be moved relative to the record, but their "parent object" is the record until you start playing it again and release them.